<?php
header('content-type:text/html;charset=utf-8');



$sysConfig = array(
    'CODEL_LEN'=>'4',
    'CODEL_BG'=>'black',
    'CODEL_WORDS'=>'2132416516asdafghofu'

);
$userConfig = array(
    'CODEL_LEN'=>'10',
    'CODEL_BG'=>'white'
);

$re = array_merge($sysConfig,$userConfig);
print_r($re);